Locomotive stoker



E. A. TURNER LOCOMOTIVE STOKER Oct. 4, 1938.

Filed Dec. 20, 1935 v 2 Sheets-Sheet 1 INVENTOR.

2 Sheets-Sheet 2 INVENTOR.

Patented Oct. 4, 1938 PATENT OFFICE LOCOMOTIVE ST'OKER;

Edwin Archer Turner, New York, N. Y., assignor, by mesne, assignments, to The Standard Stoker Company (1922), Inc., New York, N. Y., a corporation of Delaware Application December; 20, 1935 Serial No. 55,304 13 Claims. (01.110-101) This. invention relates, to locomotives and it is. especially applicable for use with existinghand fired locomotives. All coal burning steam locomotives not equipped with stokers are known as 5. hand fired locomotives. On. these locomotives. the coal is shovelled manually from the coalbunker on the tender and fed to. the firebox through. a firing opening in its backhead usually referred to. as. the hand. firing opening.

10; opening. in most. instances, is elliptical in shape and measures; 16." in height-and 20" in width.

Accordingly, the. main obj ect. of the: invention is the. provision of a. stoker of the type feeding through the firing opening in the backhead of the 15. locomotive firebox applicable to. existing hand fired locomotives without enlarging the conventional hand firing, opening in. such locomotives.

and capable of use with the firedoor and firedoor frame, ordinarily installed. on. such locomotives. to.

20 cover the hand firing opening.

More. specific. objects of the. invention. reside in. the relation. between the delivery end of the stoken. the firedoor and firedoor frame, and in the. relation between these parts and the firing 25. opening, as hereinafter described: and as illustratedin the accompanying. drawingain which- Fig. 1 is a vertical medial sectional. view of ad; jacent portionsof the; locomotive and tender with the Stoker of my: invention illustrated partlyin an elevation and partly in section;

Fig.2; is an end elevation. of the structureillustrated in. Fig. 1 as. viewed forwardly from the locomotive cab;

Fig. 3 is a sectional view'taken' on the line 3.-3.-

Fig. 4 is. a sectional View taken on the line 4.--4 of Fig. 1;

Fig. 5 is. a sectional view taken on the broken line 5.-5. of Fig. 3;.

4.0. Fig. 6 is a plan partly in section taken on the. line 6.-B of Fig. 1; and Fig. 7 is. an isometric view of the structure illustrated in Fig... 6..

On. the. drawings, 0. represents the locomotive, 45. iii. the tender, and. I2 the articulated coupling connection therebetween. The tender is provided with the usual coal bin [3 above the deck l4. and the locomotive is of the conventional. hand fired. type having a firebox I151. provided with grates Hi 50. and abackhead [1. having the conventional form of. hand firing opening therein at. I 8 spaced abovev the grate l6. and above the cahdeck- 1 9 An expansion plate 20,- of usual construction supports the rearward portion of the firebox l5 and the cab. 51 2 from the underframe. 22..

This

In most. of the hand fired locomotives the hand firing opening I8 is closed by a Butterfly firedoor indicated as a whole at 23. Insofar as the invention here is concerned, it is sufficient to note that the firedoor comprises two vertically divid- 5 ed firedoor sections 24, 25 adapted to swing, laterally and vertically about the pivot shafts 2'5, 2'! respectively. The door sections, the pivot shafts, and the door operating. mechanism housed in the casing 28 are mounted on a firedoor frame 29 as disclosed and described in the Rosenfelt Patent No. 1,171,463, granted February 15, 1916. This frame consists of a: spacer flange 36 in overlapping relation with the, backhead and an inner rim 3 I: conforming to the shape of the firing opening and extending rearwardly from the backhead so that the plane of the rearward edge of the rim is spaced from the backhead. The outer rim of the door sections 24, in closed position conforms to the shape of the rim 3! and thus closes 20. the opening boundedby this rim.

As used on hand fired locomotives both the flange 3,0 and the rim M. are unbroken to form in effect a flanged ring or short elliptical cylinder surrounding the firing opening. In carrying out 25. the present invention; both the flange and the rim 3| are cut out between the firedoor safety lugs 32. along the edges 33-, 34' to form an opening 29a in the frame 29. adjacent the lower marginal edge of the firing opening to receive the upper 30, end of a tubular stoker casing or conduit 35. The safety lugs 32 are formed with and curve outwardly from the plane of the spacer flange 39, providing spaces in which the firedoor sections 2i! and 25 are received when in their closed po- 35. sition, preventing the door sections from being blown outwardly. As will presently appear, the door sections 24, 25 are cut away tofit around or embrace that portion of the conduit 35 lying in the plane thereof.

Preferably the conduit 35 comprises a lower or cylindrical body section. 36. and. an upper head section 3-! removable from the body section. The head section 3] is counterbored at 39 for loosely receiving and resting upon the upper end of the 4 5, body section 36. The latter is. disposed more nearly vertical than horizontal in a position close to the backhead H to which it is rigidly secured by the bracket 40. This bracket is. bolted at 4| to the mud ring 42 of the backhead and at 43 50. to the foot pads 44 of the body section 36.

The head section 3.1 is rigidly secured to the backhead by the studs 45 engaging. the backhead and the lateral spacer flanges 43, 41 formed with the head section and arranged in overlapping re- 55,

- and then turns forwardly into the firing opening the upper ends of the flanges 46, 4'! of the head section overlap portions of the flange 30 of the firedoor frame between the safety lugs 32 and the edges 33, 34; the upper pair of the studs 45 engage the overlapping portions of the aforesaid flanges, thus also securing the lower portion of the firedoor frame 29 to the backhead. The upper portion of the firedoor frame is held to the backhead by the studs 48. In this manner the head section 31' of the conduit and the firedoor frame 29 are rigidly secured to the backhead and in a fixed relation to each other.

From the upper end of the'body section 36 of the conduit 35;-the head section 31 extends upwardly in the opening 29a of the firedoor frame 29 I8 close to the lower marginal edge portion thereof. Slightly forward of the inside surface-of the firedoor 23 and at a point within the firedoor frame 29, the head section 3'! opens upwardly and is constructed in the form of an upwardly and forwardly opening approximately U-shaped mouth portion 56 extending from the cylindrical or throat portion 59a of the head section into the firing opening iii. The throat portion 500 is cylindrical in shape where it opens into the mouth portion and the latter is of greater width than the cylindrical opening at the junction of the two portions. 7

Hence, the forward wall 5| of the cylindrical portion of the head section 31 gradually changes in shape and flattens out to form the flat bottom 7 52 of the wide mouth portion 56. The flat bottom 52 extends across the lower portion of the firing opening 18 and the upstanding side walls 53, 54 ofthe mouth portion are positioned close to and conform to the sides of the lower half of the firing opening and also the lower half of the rim 3! of the firedoor frame 29.

A transverse wall 55 at the junction of the throat and mouth portions of the head section 31 extends between the cylindrical throat portion 7 50a and the side walls 53, 54 of the mouth portion 59. The lower part 55a of the transverse wall is integrally formed in the head section'and ties the side walls 53, 54 and the outer portions of the bottom wall 52 to the cylindrical portion 50a. The upper part 55b of the transverse wall is carried by the hood 56 which is removable from the head section. Cap screws 51 fasten the hood to the lower portion of the head section.

As best shown in Figs. 2, 3, 6 and 7, a semicircular flat band or shoulder 58 comprises an up per portion extending about and formed integral with the hood 56 and lower end portions extending about and formed integral with the curved sides of the head section 31. The flat band or shoulder 58 forms a seat for the door sections 24 and 25 when in closed position, so that the door sections fit closely about the hood 56 and head section 31. Inasmuch as the transverse wall 55 extends outward from the band 58 in parallelism with the door sections 24, 25, it prevents light rays from within the firebox or steam caused by a broken flue from passing directly into the cab 2| through the small crack or slight opening between the door sections and the band'58.

When the door sections 24, 25 are thrown open, the upper half of the firing opening [8 is unobstructed for hand firing or inspection of the fire. The head section 3'! of the conduit 35 is wholly below the level of the upper half of the firing opening. By removing the hood 560i the head section 31 when the door sections are open, an

2,131,996 lation with the backhead. It will be seen that,

opening is provided between the conduit and the firedoor frame of a size suflicient to permit workmen to enter the firebox l5.

If desired, the full height of the central portion of the firing opening I8 can be made available for access to the firebox. For this purpose the central portion 66 of the floor 52 of, the mouth portion 50 is removable vertically from the head section 31. It is mounted in a recess 6| extending from the front of the floor 52 rearwardly to the junction of the cylindrical portion of the head section and the mouth portion. The rear end of the removable floor portion 60 seats upon the wall 5| and the forward end is supported in the side portions of the floor 52 by the vertical keys 52 seated in the closed bottom vertical slots 63. Engagement of the keys 62 in the slots 63 prevents longitudinal movement of the floor portion 69. This floor portion may be removed by raising it vertically out of engagement withthe slots 63 and withdrawing it through the firedoor frame 29 above the hood 56.

Preferably, the removablefloor portion 60 is formed with a plurality of chambers 65'. Each the deflector ribs 12 are provided at their rear ward ends with T-shaped keys 13 which are received in the closed bottom vertically disposed T-shaped slots 14 in the'flooriportion 66. En

gagement of the keys l3 and the slots'f14 holds the table in proper relation with the floor portion and permits the table to be removed byraising it vertically in the firing opening l8 until the keys 13 are out of engagement with the" slots 74 after which the table can be withdrawn through the firedoor frame 29.

Coal from the bin l3 of the tender 1| may be conveyed by any suitable transfer conveyor 89 to the lower end of the conduit '35. A screw 8|- within the conduit elevates the coal into the head section 37 and advances it through the mouth portion 59 thereof onto the distributing table II where the pressure fluid blasts from the jet openings 68 act against the coal to scatter it over the grates I6. Any suitable means" may be employed for driving the screw 8| from its lower end' and the transfer conveyor from its rearward end. As the coal moves forwardlyfrom.

the upper end of the screw 8| it spreads laterally in the mouth portion 59. The sidewalls 53,54

of the mouth portion protect the backhead from the abrasive or cutting action of thelcoal. and

the transverse wall 55 prevents-the coal from spilling out into the cab at the sidesof the head section 31 when the doorsections 24, 25 are open. Inasmuch as the spreading of the coal fills the mouth portion, there is a uniform and even delivery onto the distributing table 1] the top surface 10 of which extends in a horizontal plane from one side of the firing op'eningto' the other. The jet openings 68 and the deflector ribs 12 are arranged to evenly distribute the coal over the fire.

I Those familiar with locomotives'will' recognize 1. In combination, a firebox having a backhead with a firing opening therein, a firedoor frame at said opening, said frame comprising a rim par-' tially surrounding the firing opening and extending rearwardly from the backhead and a flange extending laterally from said rim in overlapping relation with the backhead and partially surrounding the firing opening, a stoker conduit in communication with the lower portion of said opening, said rim and flange beng cut away to permit the conduit to extend into said opening close to the lower marginal edge thereof, a firedoor mounted on said rim, said door being cut away to embrace said conduit, the latter having a flange at each side thereof in overlapping relation with said backhead and arranged with a portion of each flange overlapping a portion of the flange of said frame, and means for securing said frame and said conduit through their. flanges to said backhead including studs passing through the overlapping portions of said flanges,

2. In combination, a firebox having a backhead with a firing opening therein, a firedoor frame at said opening, said frame comprising a rim partially surrounding the firing opening and extending rearwardly from the backhead and a flange extending laterally from said rim in overlapping relation with the backhead and partially surrounding the firing opening, a stoker conduit in communication with the lower portion of said opening, said rim and flange being cut away to permit the conduit to extend into said opening close to the lower marginal edge thereof, a firedoor mounted on said rim, said door comprising two vertically divided sections each movable laterally and vertically, said door sections at their abutting edges being cut away to embrace said conduit, the latter having a flange at each side thereof in overlapping relation with saidbackhead and arranged with a portion of each flange overlapping a portion of the flange of said frame, and means for securing said frame and said conduit through their flanges to said backhead ine eluding studs passing through the overlapping portions of said flanges.

3. In combination, a firebox having a backhead with a firing opening therein, a fired'oor frame at said opening, said frame comprising a rim conforming to the shape of the firing opening and extending rearwardly from the backhead and a flange extending laterally from said rim in overlapping relation with the backhead and partially surrounding the firing opening, a stoker conduit in communication with the lower portion of said opening, said rim and flange being cut away to permit the conduit to extend into said opening close to the lower marginal edge thereof, a-firedoor mounted on said rim, said door being cut away to embrace said conduit, the latter having a flange at each side thereof in overlapping relation with said backhead and arranged with a portion of each flange overlapping a portion of the flange of said frame, and means for securing said frame and said conduit through their flanges to said backhead including studs passing through the overlapping portions of said flanges, said conduit having a top wall terminating adjacent the inside lower edge of the firedoor and having bottom and side walls extending into said opening, and arranged with the bottom wall disposed in the lower portion of the firing opening adjacent the lower margin thereof.

4. In combination, a firebox having a backhead with' a firing opening therein, a firedoor frame at said'opening, said frame comprising a rim conforming to the shape of the firing opening and extending rearwardly from the backhead and a flange extending laterally from said rim in overlapping relation with the backhead and partially surroundingthe firing opening, a stoker conduit in communication with the lower portion of said opening, said rim and flange being cut away to permit the conduit to extend into said opening close to the lower marginal edge thereof, a firedoor mounted on said rim, said door being cut away to embrace said conduit, the latter havinga flange at each side thereof in overlapping relation with said backhead and arranged with a portion of each flange overlapping a portion of the flange of said frame, and means for securing said frame and said conduit through their flanges to said backhead including studs passing through the overlapping portions of said flanges, said conduit having a top wall terminating adjacent the inside lower edge of the firedoor and having bot tom and side walls extending into said opening,

and arranged with the bottom wall disposed in the lower portion of the firing opening adjacent the lower margin thereof, a portion of said bottom wall being separable from the conduit and removable therefrom by raising it upwardly in the firing opening and withdrawing it rearwardly through that portion of the firedoor frame above the conduit.

5. In combination, a firebox having a backhead with a firing opening therein, a firedoor frame at said opening, said frame including a rim, extending rearwardly from said backhead and conforming to the shape of said opening, the plane of the rearward edge of said rim being spaced from said backhead, a stoker conduit in communication with the lower portion of said firing opening, said rim having an opening adjacent the lower marginal edge of the firing opening to receive said conduit, the latter having a hood portion terminating adjacent the plane of the rearward edge of said rim, a bottom wall extending beyond said rim into the lower portion of the firing opening, a transverse wall positioned in and extending laterally within the lower por tion of said rim, and a pair of longitudinally disposed laterally spaced walls extending forwardly from the outer ends of said transverse wall adjacent the respective sides of the firing opening and forming with said bottom wall a trough-like mouth for the conduit in the firing opening, and a firedoor mounted on said rim, the lower portion of said door being in overlapping relation with said transverse wall and shaped to embrace said conduit.

6. In combination, a firebox having a backhead witha firing opening therein, a firedoor frame at said opening, said frame including a rim extending rearwardly from said backhead and conforming to the shape of said opening, the plane of the rearward edge of said rim being spaced from said backhead, a stoker conduit in communication with the lower portion of said firing opening, said rim having an opening adjacent the lower marginal edge of the firing opening to receive said conduit, the latter having a hood portion terminating adjacent the plane of the rearwardiedge of said rim, a bottom wall extending beyond said rim into the lower portion of the firing opening, a transverse wall positioned in and extending laterally within the lower portion of said rim, and a pair of longitudinally disposed laterally spaced walls extending forwardly from the outer ends or said transverse wall adjacent the respective sides of the firing opening and forming with said bottom wall a trough-like mouth for the conduit in the firing opening, said hood portion and said transverse wall being removable from said conduit, and a firedoor mounted on said rim, the lower portion of said door being in overlapping relation with said transverse wall and shaped to embrace said conduit. 7

7. In combination, afirebox having a backhead with a firing opening therein, a firedoor frame at said opening, said frame including a rim extend ing rearwardly from said backhead and conforming to the shape of said opening, the plane of the rearward edge of said rim being spaced from said backhead, a stoker conduit in communication with the lower portion of said firing opening, said rim having an opening adjacent the lower marginal edge of the firing opening to receive said conduit, the latter having a hood portion terminating adjacent the plane of the rearward edge of said rim, a bottom wall extending beyond said rim into the lower portion of the firing opening, a transverse wall positioned in and extending laterally within the lower portion of said rim, and a pair of longitudinally disposed laterally spaced walls extending forwardly from the outer ends of said transverse wall adjacent the respective sides of the firing opening and forming with said bottom wall a trough-like mouth for the conduit in the firing opening, said hood portion and said transverse wall being integrally formed and removable from said conduit, anda firedoor mounted on said rim, the lower portion of said door being in overlapping relation with said transverse wall and shaped to embrace said conduit.

8. In combination, a firebox having a backhead with a firing opening therein, a firedoor frame at said opening, said frame including a rim extending rearwardly from said backhead and conforming to the shape of said opening, the plane of the rearward edge of said rim being spaced from said backhead, a stoker conduit in communication with the lower portion of said firing opening, said rim having an opening adjacent the lower marginal edge of the firing opening to receive said conduit, the latter having a hood portion terminating adjacent the plane of the rearward edge of said rim, a bottom wall extending beyond said rim into the lowerportion of the firing opening, a transverse wall positioned in and extending laterally within the lower portion of said rim, and a pair of longitudinally disposed laterally spaced walls extending forwardly from the outer ends of said transverse wall adjacent the respective sides of the firing opening and forming with said bottom walla trough-like mouth for the conduit in the firing opening, the central portion a of said bottom wall being removable from the tion of said rim, and apair of longitudinally disposed laterally spaced walls extending forwardly from the outer ends of said transversewall ad: jacent the respective sides of the firing opening and forming with said bottom wall a trough-like mouth for: the conduit in the firing opening, the central portion of said bottom wall and said hood portion and said transverse wall being removable from theconduit, and a firedoor mounted on said rim, the lower portion of said door being in overlapping relation with said transverse wall and shaped to embrace .said conduit.

10. In combination, a firebox having a backhead provided with a firing opening, a frame at said opening, said frame partially surrounding the firing opening and overlapping the backhead,

a stoker conduit entering the lower portion of' said opening from outside the firebox, said frame being cut away to permit the conduit to extend into said opening close, to .the lower marginal edge thereof, a firedoor movably mounted on said frame and embracing the top portion of said conduit, the latter being provided with a mouth portion disposed within said frame and extending into the firing opening and comprising a bottom wall adjacent the lower. marginal edge of the firing opening, side walls adjacent the respective sides of the firing opening and a cross wall joining the rear edges of said bottom and. side walls, said conduit being provided with side flanges, and

to maintain said conduit and said frame in rigid relationship.

11. In combination, a firebox having a backhead provided with 'a firing opening, a frame at said opening, said frame partially surrounding the firing opening and overlapping the backhead, a stoker conduit entering the lower portion of said opening from outside the firebox, said frame being cut away to permit the conduit to extend into said opening close to the lower marginal edge thereof, a firedoor movably mounted on said frame fitting closely against the top and side portions of said conduit, the latter being provided with a mouth portion disposed within said frame detachable means cooperating with said fianges and extending into the firing opening and Comprising a bottom wall adjacent the lower marnal edge of the firing opening, side walls adjacent the respective sides of the firing opening and a cross wall joining the rear edges of said bottom and side Walls, said conduit being provided with side flanges, and detachable means cooperating with said fianges rigidly securing said conduit, the sections of the firedoor being laterally separable to clear the upper portion of the firing opening, said conduit being provided with a mouth portion disposed within said frame and extending into the firing opening and comprising a bottom wall adjacent the lower marginal edge of the firing opening, side walls adjacent the respective sides of the firing opening and a cross wall joining the rear edges of said bottom and side walls, said conduit being provided with side flanges, and detachable means cooperating with said flanges to maintain said conduit and said frame in rigid relationship.

13. In combination, a firebox having a backhead provided with a firing opening, a frame therefor, a stoker conduit entering the lower portion of said opening from outside the firebox, said frame being cut away to receive said conduit, the latter being provided with a mouth portion disposed Within said frame and extending into the firing opening and comprising a bottom Wall adjacent the lower marginal edge of the firing opening, side walls adjacent the respective sides of the firing opening and a cross wall joining the rear edges of said bottom and side Walls and a firedoor mounted on said frame and embracing the top portion of the conduit, the lower part of the firedoor being rearward of said cross wall.

E. ARCHER TURNER. 

